Cultivator.



D. J. LAMPRELL & F. COOK.

CULTIVATOR.

APPLICATION FILED SEPTA, 1913.

1,141,804. Patented June 1, 1915.

nnnnnn THE NoRkls PETERS CO. PHOTO-LITHO.. WASHINGTON D, C

useful Improvements TQG.

DENIS JOHN LAMPRELL Ann FREDRICK coon, or DOWERIN, VIESTERN AUSTRALIA, V AUSTRALIA.

QULTIVATOR.

menses.

Specification of Letters Patent.

Patented June 1, 1915.

Application filed September 4', 1913. Serial No. 788,169.

To all whom it may concern) Be it known that we, DENIS JOHN LAM- PPELL and FREDRICK CooK, both subjects of the King of Great Britain, and residing at Dowerin, .lVestern Australia, Commonwealth of Australia, have invented certain new and in Cultivators, of a specification;

to improvements in Which the following is -.This invention relates cultivators,

rate pivoted tine, and, also, a pressurespring or-springs for each section of tines, the latter springs being employed to impart flexibility to the frame. it The object of said springs is to'cause or urge the tines, either separately or conjointly as a group or gang, to the working over an obstacle, and, also, to urge the tines to their work and to maintain them at a uniform depth.

The invention will now be explained with the aid of the annexed drawings, in which- Figure 1 is a side se'ctionalelevation of the improved cultivator showing the application of one of the pressure springs to a tine and, also, to the frame carrying said tine. Fig. 2 is a plan View. Fig. 3 is a rear end view of one of the tines and its carrier bracket. Fig. 4: is a detail showing, in full lines, the passage of the tine over an dotted lines, thenormal position of the tine. Fig. 5 is a detail showing the manner of securing the tine-carrier bracket to the rame.

In said figures a indicates one of thetines, of which there may be any number, as will be understood. This tine is pivoted at b to its carrier bracket 0, which latter also acts as a guide to insure correct working of the tine. The said carrier bracket 0 is U- shaped and is secured to the cross-bars d and (Z of the U-shaped frame 6, the cross-bars mentioned'extending across said frame and having their ends turned upward and suitably secured to the side members of said and it embodies the use and pro-- vision of a pressure. spring for each sepaposition immediately after passing obstacle, and, in

is rigidly attached to the draft pole f of the cultivator.

' Each tine a is provided with its own pressure spring g, which is suitably guided on the rod 9 and operatively held in'the U- shaped bridle piece K, the latter having a suitable tension adjustment device n, here shown as consisting of a pair of nuts and a head plate. The connecting or bottom portion of this bridle passes through the time a, and its arms pass through the foot plate W, as shown clearly in Fig. 3, the tension of spring 9 operating as between the adjustment device a and the foot plate 02 which latter is mounted on the carrier bracket 0.

The front of the frame 6 is pivoted to the cross-bar f, and is suspended at its rear end by the link j from an arm 7' said arm being pivoted on the cross-bar 7' of the secondary frame j of the cultivator. Frame 1' is rigidly connected to the main axle y' Arm 7' at its other end, is connected to the cross-bar m carrying the bridles m in which the spiral springs m are tensionally held on the pins m by the nuts m The pins m extend through openings in the forward ends of the bridles m and have their heads m hingedly connected to the axle i of the cultivator, such connection serving to impart rigidity and firmness of action to the bridles and their contained tension springs m These springs m act to exert pressure upon the frame as a whole, in the same way as the springs 9 upon the tines.

en the tine meets an obstacle m, as seen in Fig. 4, its rear portion is forced to rock upward on its pivot Z2 toward the stay bar d of the frame 6, while the downward movement of its front end contracts the spring g. The pressure springs m of the frame, as also the springs g of the tines, are set to the approved normal working tension by means of the nuts m and the adjustment devices 12, respectively, and the said springs m are also controlled as a whole by the single lever 39, which is keyed on the axle 7' and retained in any position by the usual notched quadrant p and pawl 39 the quadrant being rigidly secured at p to the draft pole F. The lever 79, by its arm 10 is operatively connected to the cross-bar j carrying the arm j whereby said arm. j and connected members and parts are operated. This lever p, while controlling all the tines I the whole frame 6 to rise sufiiciently high -toof the cultivator together, allows eachtine independence of action, and it also sets the depthof cut for the tines by pressing frame 6 downward by means of the arm 3' and link j, while each separate tine is kept to its work by its spring 9. Each tine is controlled .by its own spring 9, and if such spring prove insufficient to allow the tine to rise and pass over the obstacle, then the springs of respond to the pressure and allow clear said obstacle. Any number of strength- 7 ening bars r niay be used, these bars being keyed to the axle 3' and also to the cross-bar said frame is connected; a rearwardly-extending arm carried by said axle; a second framepivotally connected at its front end to said cultivator frame and suspendedat its rear end from said arm; and resilient devices for normally holding sald second frame in lowered position.

1 Copies of this patent may be obtained for five .cents each, by addressing the V Washington, D. 0."

3. In a wheeled cultivator, the; combination of a cultivator frame; anaxle to which said frame is connected; a longitudinallyarranged arm fulcrumed intermediate its ends'in the'cultivator frame; a second frame pivotally connected at its front e'nd to the cultivator frame and suspended at its rear 7 end from the rear end of said arm; and'reer silient meansconnected to thefront end of said arm for normally holding said second frame n lowered 13081111011. v 4. In a Wheeled cult vator, the combma:

tionof a cultivator frame; an axle to which said frame 1s connected; a rearwardly-extending arm carried by said axleg'a 1ongi-- tudinally-arranged arm pivotally connected intermediate its ends to .theirear end of the first-named arm; a link suspended from the 7 rear end of the second-na1ned arm; a second frame pivotally connected at its front end to the cultivator frame and having its rear end connected to said link; and resilient connections between said axle and the front end of the second-named arm for normally holding said second frame in lowered position.

In testimony whereof wehave hereunto set our hands in presence of two subscribing witnesses. V V DENIS JOHN LAMPRELL,

FREDRICKCOOK; 'Witnesses: 7 7

JOHN MoPnnRsoN,

R. H. LnEsoN.

Commissioner of Patents, 

